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Human hair absorbs calcium and magnesium from tap water, affecting its structure and styling properties.

Environmental and cosmetic factors, including heat, chemicals, and sun exposure, can cause hair loss and damage.

Outside factors like grooming, chemicals, and the environment can damage hair and cause disorders.

A tough membrane between the outer and inner layers of human hair protects it from damage.

Hair can't be reliably repaired once damaged; prevention and proper product use are key to maintaining hair health.

Human hair's strength comes from a honeycomb-like structure and macrofibrils.

Hair fiber research combines multiple sciences to improve hair care products.

The document concludes that proper diagnosis and treatment of hair shaft disorders require understanding their unique causes and avoiding hair-damaging practices.

Cosmetic procedures can harm hair, but damage can be minimized with knowledge and care; however, once hair is damaged, it cannot be reliably repaired.

Using the right hair care products can improve hair health and help manage hair disorders.

Using certain hair products may increase breast cancer risk in black women.

Lipids are important for healthy hair, but their exact role is not fully understood and needs more research.

Hair damage shows as fragility, dullness, and discoloration, varies by ethnicity, and is worsened by cosmetic procedures and diseases.

Hair straightening methods have advanced to improve effectiveness and reduce damage, but still rely on heat and chemicals.

18-MEA and cationic surfactants can restore and maintain hair's hydrophobic nature, improving its beauty and feel.

A homeopathic antidandruff shampoo caused severe hair matting in a girl.

Natural hair-loss preventers from plants and herbs are becoming popular due to fewer side effects and added benefits.

Proper haircare and communication with doctors are key to managing hair loss and avoiding damage.

Surfactants in shampoos and conditioners remove some but not all lipids from hair, and more research is needed to understand their full impact.

Afro-textured hair is more fragile and prone to certain scalp conditions, requiring careful treatment and more research for effective management.

The enzyme Rand protease works well for leather dehairing and its stability is important, with Leu75 playing a key role.

Shampoos have evolved into multifunctional products with patented innovations for different hair needs and can include medicinal herbs for hair and scalp health.

A new method accurately measures amino acids in treated hair, showing bleaching reduces amino acids while protein treatments increase them.

Using both TGA and DTDG in hair straightening reduces hair damage compared to using TGA alone.

Bleaching hair removes its protective top layer and exposes more hydrophilic groups, changing its chemical surface and affecting how it interacts with products.

Tight hairstyles and chemical relaxers can cause hair loss known as traction alopecia.

Hair treatments like bleaching increase friction by exposing tiny pores on the hair surface.

Chemical hair straighteners can cause scalp and hair damage, but long-term effects are unclear.

Hair fibers interact through classical forces, which are influenced by treatments and products, important for hair care and other applications.

Hair treatments cause significant structural changes, especially with excessive heat, regardless of ethnicity.